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(rumus trapesium)
L=jssxtx seper dua
L=15cm+9cmx12cmx seper dua
L=24cmx12cmx seperdua
L=24cmx6cm
L=144cm²
(9+15)×12= 24×12= 288:2=……
2. Luas= (a+b)×t:2
(20+40)×16= 60×16= 960:2=……
hitung sendiri yah, maaf kalo salah